Results 271 to 280 of about 325,202 (292)
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ACS Nano
Employing water as a hydrogen source to participate in the hydrogen atom transfer (HAT) process is a low-cost and carbon-free process demonstrating great economic and environmental potential in catalysis.
Xing'an Dong +4 more
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Employing water as a hydrogen source to participate in the hydrogen atom transfer (HAT) process is a low-cost and carbon-free process demonstrating great economic and environmental potential in catalysis.
Xing'an Dong +4 more
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A chiral hydrogen atom abstraction catalyst for the enantioselective epimerization of meso-diols
ScienceHydrogen atom abstraction is an important elementary chemical process but is very difficult to carry out enantioselectively. We have developed catalysts, readily derived from the Cinchona alkaloid family of natural products, which can achieve this by ...
Antti S. K. Lahdenperä +6 more
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Journal of Physical Chemistry A, 2018
Alkenes are important ingredients of realistic fuels and are also critical intermediates during the combustion of a series of other fuels including alkanes, cycloalkanes, and biofuels. To provide insights into the combustion behavior of alkenes, detailed
Quan‐De Wang, Ziwu Liu
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Alkenes are important ingredients of realistic fuels and are also critical intermediates during the combustion of a series of other fuels including alkanes, cycloalkanes, and biofuels. To provide insights into the combustion behavior of alkenes, detailed
Quan‐De Wang, Ziwu Liu
semanticscholar +1 more source
Hydrogen Atom Abstraction Thermodynamics of a μ-1,2-Superoxo Dicopper(II) Complex.
Journal of the American Chemical Society, 2017Pyrazolate-based μ-1,2-peroxo dicopper(II) complex 1 undergoes clean 1e- oxidation at low potential (-0.59 V vs Fc/Fc+) to yield the rather stable μ-1,2-superoxo dicopper(II) complex 3, which was characterized by spectroscopic methods (ν̃(O-O) = 1070 cm ...
N. Kindermann +3 more
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Journal of the American Chemical Society, 2016
Bubbling O2 into a THF solution of CoII(BDPP) (1) at -90 °C generates an O2 adduct, Co(BDPP)(O2) (3). The resonance Raman and EPR investigations reveal that 3 contains a low spin cobalt(III) ion bound to a superoxo ligand. Significantly, at -90 °C, 3 can
Chun-Chieh Wang +14 more
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Bubbling O2 into a THF solution of CoII(BDPP) (1) at -90 °C generates an O2 adduct, Co(BDPP)(O2) (3). The resonance Raman and EPR investigations reveal that 3 contains a low spin cobalt(III) ion bound to a superoxo ligand. Significantly, at -90 °C, 3 can
Chun-Chieh Wang +14 more
semanticscholar +1 more source
Thermodynamics of a μ-oxo Dicopper(II) Complex for Hydrogen Atom Abstraction.
Journal of the American Chemical Society, 2017The mono-μ-hydroxo complex {[Cu(tmpa)]2-(μ-OH)}3+ (1) can undergo reversible deprotonation at -30 °C to yield {[Cu(tmpa)]2-(μ-O)}2+ (2). This species is basic with a pKa of 24.3.
Ghazanfar Ali +4 more
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Inorganic Chemistry, 2017
Dioxygen activation toward efficient catalysis at ambient temperature is still a big challenge for industrial oxidations, while it proceeds smoothly in nature.
Jisheng Zhang +4 more
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Dioxygen activation toward efficient catalysis at ambient temperature is still a big challenge for industrial oxidations, while it proceeds smoothly in nature.
Jisheng Zhang +4 more
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Ab initio kinetics studies of hydrogen atom abstraction from methyl propanoate.
Physical Chemistry, Chemical Physics - PCCP, 2016The kinetics of hydrogen abstraction by five radicals (H, CH3, O((3)P), OH, and HO2) from a biodiesel surrogate, methyl propanoate (MP), is theoretically investigated.
Ting Tan +3 more
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Second hydrogen atom abstraction by molecular ions.
Journal of Mass Spectrometry, 2017We report the observation of a new physical phenomenon of the addition of 2 hydrogen atoms to molecular ions thus forming [M + 2H]+ ions. We demonstrate such second hydrogen atom abstraction onto the molecular ions of pentaerythritol and trinitrotoluene (
S. Tsizin +3 more
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Outcome-changing effect of polarity reversal in hydrogen-atom-abstraction reactions.
Journal of Physical Chemistry A, 2015We have examined hydrogen-atom-abstraction reactions for combinations of electrophilic/nucleophilic radicals with electrophilic/nucleophilic substrates.
B. Chan, C. Easton, L. Radom
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